}
	if a.Index == "" {
		return errors.New("empty index value")
	}

	if (a.Username == "" && a.Password != "") || (a.Username != "" && a.Password == "") {
		return errors.New("username and password should be set in pairs")
	}

	return nil
}

// ElasticsearchTarget - Elasticsearch target.
type ElasticsearchTarget struct {
	initOnce once.Init

	id         event.TargetID
	args       ElasticsearchArgs

* Es besteht auch eine gute Chance, dass der Pull Request nicht wirklich benötigt wird, da das Problem auf **andere Weise** gelöst werden kann. Dann können Sie das vorschlagen oder danach fragen.

### Keine Panik wegen des Stils { #dont-worry-about-style }

* Machen Sie sich keine Sorgen über Dinge wie den Stil von Commit-Nachrichten. Ich werde den Commit zusammenführen und manuell anpassen.

### **4.2 WordCount**

WordCount is a simple program that counts how often a word occurs in a text file. The code builds a dataset of (String, Int) pairs called counts, and saves the dataset to a file.

The following example submits WordCount code to the Scala shell. Select an input file for the Spark WordCount example. We can use any text file as input.

  PairedStats(Stats xStats, Stats yStats, double sumOfProductsOfDeltas) {
    this.xStats = xStats;
    this.yStats = yStats;
    this.sumOfProductsOfDeltas = sumOfProductsOfDeltas;
  }

  /** Returns the number of pairs in the dataset. */
  public long count() {
    return xStats.count();
  }

  /** Returns the statistics on the {@code x} values alone. */
  public Stats xStats() {
    return xStats;
  }

      Map<? extends K, ? extends V> map) {
    HashBiMap<K, V> bimap = create(map.size());
    bimap.putAll(map);
    return bimap;
  }

  /**
   * An immutable key-value pair with mutable links to other pairs in its hash buckets and in
   * iteration order.
   */
  static final class Node<K extends @Nullable Object, V extends @Nullable Object> {
    @ParametricNullness final K key;
    @ParametricNullness final V value;

- Fixed a panic in `kubectl exec` when the terminal size queue delegate is uninitialized. ([#135918](https://github.com/kubernetes/kubernetes/pull/135918), [@MarcosDaNight](https://github.com/MarcosDaNight)) [SIG CLI]

   *        0 +----------+-------+--------------→ storedPermits
   *          0 thresholdPermits maxPermits
   * </pre>
   *
   * Before going into the details of this particular function, let's keep in mind the basics:
   *
   * <ol>
   *   <li>The state of the RateLimiter (storedPermits) is a vertical line in this figure.
   *   <li>When the RateLimiter is not used, this goes right (up to maxPermits)

   *     smallest possible to fit {@code tableSize}; or an {@code Object[]} where [0] is one of
   *     these; [1] indicates how many element pairs in {@code alternatingKeysAndValues} are valid;
   *     and [2] is a {@link Builder.DuplicateKey} for the first duplicate key encountered.
   */
  private static @Nullable Object createHashTable(

 * whose edges are anonymous entities with no identity or information of their own.
 *
 * <p>A graph is composed of a set of nodes and a set of edges connecting pairs of nodes.
 *
 * <p>There are three primary interfaces provided to represent graphs. In order of increasing
 * complexity they are: {@link Graph}, {@link ValueGraph}, and {@link Network}. You should generally

   * for use with it (such as all-ASCII text) and for simple debugging text. When using this method,
   * consider the following:
   *
   * <ul>
   *   <li>it may split surrogate pairs
   *   <li>it may split characters and combining characters
   *   <li>it does not consider word boundaries
   *   <li>if truncating for display to users, there are other considerations that must be taken